docs: def isempty(path):
      """Check if a path has zero length (also true if it's a directory)
  
      :param path: A string for the path.  This should not have any wildcards.
      :returns: True if the path has zero length, False otherwise.
      """
      cmd = "hadoop fs -test -z %s"
      p = _hadoop_fs_command(cmd % (path))
      p.communicate()
      rcode = p.returncode
      return bool(int(rcode == 0))